| 摘要 |
A portable dispenser especially suitable for blending and dispensing bacterial solutions includes within a single housing a reservoir, a pump, a valve, self-contained batteries, and timing relays. The relays are readily adjustable for determining over a wide range the length of the dispensing periods and the length of time between them. A small, efficient pump is used for blending just before it is used for dispensing. For applications requiring small quantities of additives, the dispenser can function long periods unattended between refills of additives and replacements of batteries.
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